Security - https://stelgano.com BeaverCheck Audit

F

Email Security

Action

No DMARC

FIX

No DMARC

No DMARC record found

Without DMARC, email receivers have no policy for handling authentication failures.

DMARC

No DMARC record found

Without DMARC, email receivers have no policy for handling authentication failures from your domain.

Without DMARC, email receivers have no policy for handling authentication failures.

Why this matters

Without DMARC, anyone can send phishing emails using your domain name.

Learn more ▾

DMARC tells receiving mail servers what to do with email that fails SPF/DKIM checks for your domain. With a strict 'p=reject' policy, spoofed emails get bounced; without it they reach the inbox. Domains used in phishing campaigns lose deliverability and brand trust fast.

Source: DMARC.org / NIST

B

CORS Configuration

No CORS headers

REVIEW

No CORS headers

No CORS headers present — secure default

CORS Configuration ✓ Secure

No CORS headers detected.

Cross-origin requests are blocked by browser same-origin policy.

Origin reflection test

Some servers mirror the request Origin header, which can be exploited. Test manually:

curl -sI -H "Origin: https://evil.com" <url> | grep -i access-control

B

security.txt

Published with 2 contact(s)

REVIEW

security.txt

Contact: mailto:security@stelgano.com, https://github.com/stelgano/stelgano/security/advisories/new

Expires: 2027-01-01T00:00:00.000Z

Encryption: https://stelgano.com/.well-known/security-pgp.asc

Policy: https://stelgano.com/.well-known/security.txt

A+

Security Headers

9 of 10 headers properly configured

PASS

9 of 10 headers properly configured

Strict-Transport-Security is properly configured

Got: max-age=63072000; includeSubDomains; preload

X-Content-Type-Options is properly configured

Got: nosniff

X-Frame-Options is properly configured

Got: DENY

Referrer-Policy is properly configured

Got: no-referrer

Permissions-Policy is set

Got: camera=(), microphone=(), geolocation=(), payment=(), usb=(), midi=(), gyroscope=(), accelerometer=(), magnetometer=()

Content-Security-Policy is present

Got: default-src 'self'; script-src 'self' 'sha256-TcKTNdXTdoY7CPkISQBGRdZrB9mW+WPwtB…

Cross-Origin-Opener-Policy is properly configured

Got: same-origin

Cross-Origin-Embedder-Policy header is missing

COEP prevents loading cross-origin resources without explicit permission. Required for SharedArrayBuffer and high-resolution timers.

Expected: require-corp

X-Powered-By header is not present

Server header is present without version info

Got: cloudflare

COEP prevents loading cross-origin resources without explicit permission. Required for SharedArrayBuffer and high-resolution timers.

Expected: require-corp

Why this matters

COEP enforces that all embedded resources opt-in to cross-origin embedding — required for cross-origin isolation features.

Learn more ▾

Cross-Origin-Embedder-Policy: require-corp ensures every embedded resource (script, iframe, image) explicitly allows being loaded cross-origin. Combined with COOP, this enables the cross-origin-isolated context that unlocks SharedArrayBuffer, high-resolution timers, and other powerful APIs.

Source: MDN / web.dev

A+

Content Security Policy

8 of 11 CSP checks passed

PASS

8 of 11 CSP checks passed

Raw CSP policy

Got: default-src 'self'; script-src 'self' 'sha256-TcKTNdXTdoY7CPkISQBGRdZrB9mW+WPwtBzUlVAeDUI=' 'sha256-cdSspjwBpsvWsWkWNjpTJCWvOFqUartDG9ykPCr0lLM=' 'sha256-xJ+O11qzfGNdhPsakz+MANZJPuAEzgSwqFfTO6evqaU='; style-src 'self' 'unsafe-inline'; font-src 'self'; connect-src 'self' wss: ws:; img-src 'self' data:; object-src 'none'; frame-ancestors 'none'; base-uri 'self'; form-action 'self'

default-src directive is set

Got: default-src 'self'

No 'unsafe-inline' in script source

No 'unsafe-eval' in script source

No wildcard in script source

object-src is set to 'none'

Got: object-src 'none'

base-uri is properly restricted

Got: base-uri 'self'

frame-ancestors directive is set

Got: frame-ancestors 'none'

form-action directive is set

Got: form-action 'self'

upgrade-insecure-requests is not set

This directive upgrades HTTP resources to HTTPS automatically, preventing mixed content.

Expected: upgrade-insecure-requests

Content-Security-Policy-Report-Only is also set

A report-only policy is active alongside the enforcing policy for monitoring.

Got: script-src 'unsafe-inline' 'unsafe-eval'; connect-src 'none'; report-uri https://csp-reporting.cloudflare.com/cdn-cgi/sc…

This directive upgrades HTTP resources to HTTPS automatically, preventing mixed content.

Expected: upgrade-insecure-requests

Why this matters

Without upgrade-insecure-requests, any HTTP subresource link survives as a mixed-content warning instead of auto-upgrading.

Learn more ▾

Adding `upgrade-insecure-requests` to your CSP turns every http:// subresource fetch into https:// at the browser layer. One-line defense against accidental mixed content from legacy links or third-party widgets.

Source: MDN CSP

A report-only policy is active alongside the enforcing policy for monitoring.

Why this matters

Running enforcing + Report-Only in parallel lets you test stricter directives safely before promoting them.

Source: MDN CSP

Parsed Policy

default-src 'self'

script-src 'self''sha256-TcKTNdXTdoY7CPkISQBGRdZrB9mW+WPwtBzUlVAeDUI=''sha256-cdSspjwBpsvWsWkWNjpTJCWvOFqUartDG9ykPCr0lLM=''sha256-xJ+O11qzfGNdhPsakz+MANZJPuAEzgSwqFfTO6evqaU='

style-src 'self''unsafe-inline'

font-src 'self'

connect-src 'self'wss:ws:

img-src 'self'data:

object-src 'none'

frame-ancestors 'none'

base-uri 'self'

form-action 'self'

A+

TLS & Certificates

TLS 1.3, 7 checks passed

PASS

TLS 1.3, 7 checks passed

TLS 1.3 is used

Got: TLS 1.3

Strong cipher suite is used

Got: TLS_CHACHA20_POLY1305_SHA256

HTTP/2 is not negotiated

HTTP/2 provides multiplexing and header compression for better performance.

Got: http/1.1

Certificate is valid (expires in 82 days)

Got: 2026-07-27T11:57:08Z

Certificate chain has 3 certificates

Certificate uses modern signature algorithm

Got: ECDSA-SHA256

Certificate covers 2 domain(s)

Got: stelgano.com, *.stelgano.com

Certificate is issued by a trusted CA

Got: CN=WE1,O=Google Trust Services,C=US

HTTP/2 provides multiplexing and header compression for better performance.

Why this matters

HTTP/1.1 forces the browser to make sequential requests, multiplying latency on every page.

Learn more ▾

HTTP/2 (and HTTP/3) multiplex many requests over a single connection, eliminating head-of-line blocking. HTTP/1.1 forces the browser to either queue requests or open many parallel connections — both worse. Most modern web servers support HTTP/2 with one config line.

Source: MDN Web Docs

Connection

Protocol

TLS 1.3

Cipher Suite

TLS_CHACHA20_POLY1305_SHA256

HTTP Version

HTTP/1.1

Certificate Chain

Leaf Certificate

Subject CN=stelgano.comIssuer CN=WE1,O=Google Trust Services,C=USValid 2026-04-28T10:57:11Z → 2026-07-27T11:57:08ZExpires in 82 days SANs stelgano.com, *.stelgano.comSignature ECDSA-SHA256Serial 9fe0766d29547c6e0e4442a08c879648

Intermediate (CA Certificate)

Subject CN=WE1,O=Google Trust Services,C=USIssuer CN=GTS Root R4,O=Google Trust Services LLC,C=USValid 2023-12-13T09:00:00Z → 2029-02-20T14:00:00ZExpires in 1021 days Signature ECDSA-SHA384Serial 7ff31977972c224a76155d13b6d685e3

Intermediate (CA Certificate)

Subject CN=GTS Root R4,O=Google Trust Services LLC,C=USIssuer CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BEValid 2023-11-15T03:43:21Z → 2028-01-28T00:00:42ZExpires in 632 days Signature SHA256-RSASerial 7fe530bf331343bedd821610493d8a1b

A+

Cookie Security

No cookies set — no cookie security risks

PASS

No cookies set — no cookie security risks

No cookies detected — no cookie security risks to report.

A+

Subresource Integrity

1 of 1 external resources have SRI

PASS

1 of 1 external resources have SRI

script from static.cloudflareinsights.com has SRI protection

SRI Coverage 1 / 1 of external resources have integrity hashes

Tag	Domain	Integrity
<script>	static.cloudflareinsights.com	✓ Protected

A+

JS Library Vulnerabilities

No known vulnerabilities

PASS

No known vulnerabilities

No known JavaScript library vulnerabilities detected

No known JavaScript library vulnerabilities detected.

A+

Information Leakage

No exposures

PASS

No exposures

security.txt is present — good practice

No sensitive files exposed

No sensitive files exposed — all paths returned 404.

Path	Status	Category	Risk
/.git/HEAD	✓ Not found	Version Control	—
/.git/config	✓ Not found	Version Control	—
/.svn/entries	✓ Not found	Version Control	—
/.env	✓ Not found	Configuration	—
/.env.local	✓ Not found	Configuration	—
/.env.production	✓ Not found	Configuration	—
/wp-config.php	✓ Not found	Configuration	—
/.htaccess	✓ Not found	Configuration	—
/phpinfo.php	✓ Not found	Debug	—
/server-status	✓ Not found	Debug	—
/server-info	✓ Not found	Debug	—
/.well-known/security.txt	✗ Exposed	Security Policy	Info

A+

Permissions-Policy

9 directives, 0 missing

PASS

9 directives, 0 missing

camera=() — blocked for all origins

microphone=() — blocked for all origins

geolocation=() — blocked for all origins

payment=() — blocked for all origins

usb=() — blocked for all origins

midi=() — blocked for all origins

gyroscope=() — blocked for all origins

accelerometer=() — blocked for all origins

magnetometer=() — blocked for all origins

Raw Header

camera=() microphone=() geolocation=() payment=() usb=() midi=() gyroscope=() accelerometer=() magnetometer=()

Feature Permissions

Blocked Self Only Unrestricted Not Set

camera Blocked

microphone Blocked

geolocation Blocked

payment Blocked

usb Blocked

midi Blocked

gyroscope Blocked

accelerometer Blocked

magnetometer Blocked

A+

Transport Security

HTTP/3, HSTS, and TLS version analysis

PASS

HTTP/3, HSTS, and TLS version analysis

HTTP/3 (QUIC) supported

The server advertises HTTP/3 via Alt-Svc for faster connections on mobile networks.

HSTS enabled (includeSubDomains, preload)

HSTS preload enabled

TLS 1.3 in use (fastest handshake, 1-RTT)